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Denshi Jisho — Online Japanese dictionary

我利我利 がりがり 1:
2: (Usually written using kana alone) skin and bones; appearing to be underweight; (Adverb) with a grinding, crunching, scratching (sound);
3: desperately; recklessly;
4: (No-adjective) crunchy hardness;
5: selfishness; selfish person
Na-adjective, Noun 
我利我利亡者 がりがりもうじゃ greedy or grasping person
Noun 

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